No, the antenna pin (pin 4) is connected to *only* the antenna, nothing else. You don't need anything connected to pin 2 on the Arduino for the transmitter. The transmitter is a serial device, so the only connections to the Arduino are the common GND, VCC, and the data pin. That's it.--JonPractical Arduino: www.practicalarduino.com

And here's an example just using the SoftwareSerial... which can also be done with the hardware version by changing it all to Serial.print instead of rfSerial.print (and connecting to right pins of course):http://dma.ucla.edu/senselab/node/389

If you have enough sketch space, Virtual Wire really helps eliminating the chance of noise.. but it also limits the amount of data being able to be sent per second. So you win some and you lose some. ;P